1321442123100 has 144 divisors (see below), whose sum is σ = 4171870649856. Its totient is φ = 320279040000.

The previous prime is 1321442123059. The next prime is 1321442123129. The reversal of 1321442123100 is 13212441231.

It is a super-2 number, since 2×1321442123100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15801597 + ... + 15885003.

Almost surely, 2^{1321442123100} is an apocalyptic number.

1321442123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321442123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085935324928).

1321442123100 is an abundant number, since it is smaller than the sum of its proper divisors (2850428526756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321442123100 is a wasteful number, since it uses less digits than its factorization.

1321442123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88236 (or 88229 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1321442123100 its reverse (13212441231), we get a palindrome (1334654564331).

The spelling of 1321442123100 in words is "one trillion, three hundred twenty-one billion, four hundred forty-two million, one hundred twenty-three thousand, one hundred".